Wearable Sensor Groove for Biometric and Gesture Detection
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Solution Overview
Problem
Existing wearable devices lack efficient methods for detecting biometric information and user interactions, such as gestures, while being worn on the body, limiting their functionality and user experience.
Innovation Solution
A wearable device with a housing featuring a first surface for contact with the body, a groove, a light emitter and receiver for biometric detection, and a touch sensor for gesture recognition, along with a processor to analyze user interactions and execute functions based on detected gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wearable device is worn on a first body part (e.g., finger), then it can detect biometric information from that body part, but it cannot efficiently detect gestures or interactions involving other body parts
Solution Approach 1:
The wearable device incorporates multiple sensors (light emitter, light receiver, touch sensor, motion sensor) that serve multiple functions: the light emitter/receiver detect blood flow for biometric information, the touch sensor detects finger touches on the groove, and the motion sensor detects gestures involving other body parts. This multi-functionality allows a single wearable device to handle various detection tasks without requiring separate devices for each function.
Solution Approach 2:
The groove structure acts as an intermediary element that facilitates interaction between different body parts and the sensors. The groove provides a designated area where a second body part (e.g., another finger) can be positioned for touch detection, while also serving as a structural feature that guides the placement of sensors and enables motion detection for gesture recognition.
2Measurement precision
If multiple sensors are added to detect gestures and biometric information, then detection accuracy improves, but device complexity increases
Solution Approach 1:
Multiple sensor modules (light emitter, light receiver, touch sensor, motion sensor) are integrated into a single wearable device housing. The light emitter and light receiver are positioned to face each other across the first body part for blood flow detection, while the touch sensor is placed on the groove for finger touch detection. The motion sensor is integrated to detect gestures. This merging of multiple sensing functions into one compact device achieves high measurement precision without proportionally increasing complexity.
3Adaptability or versatility
If a groove is added to accommodate a second body part, then gesture recognition capability is enhanced, but manufacturing complexity increases
Solution Approach 1:
The groove is designed with a curved cross-section that matches the natural shape of a finger, allowing comfortable and accurate placement of the second body part. This curved geometry facilitates gesture recognition by providing a ergonomic interface while the groove can be efficiently formed using standard molding or machining techniques during housing manufacturing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate biometric information detection and gesture recognition, enhancing user interaction capabilities and functionality of wearable devices.
Implementation Method 1
a light emitter configured to emit light toward the first surface and a light receiver spaced apart from the light emitter and configured to receive reflected light that is at least a portion of the light emitted by the light emitter and reflected
Implementation Method 2
a touch sensor, disposed in the housing, configured to detect a touch on a portion of the groove
Implementation Method 3
identifying a motion of the user through a motion sensor of the wearable device, based on identifying the second body part positioned in the groove
Data Source
AI summary
According to an embodiment, a wearable device includes a housing including a first surface configured to contact a first body part of a user in a state in which the wearable device is worn on the first body part, a second surface opposite to the first surface, and a groove recessed from the second surface toward the first surface. The wearable device includes a first sensor in the housing disposed toward the groove. The first sensor is configured to detect a second body part of the user, distinct from the first body part of the user, positioned in the groove.